It seems like a lot if interest has been stirred up by Clarence Lee's mention of a product called biodiesel and it's use by a modeler by the name of James Tasman. I've E-mailed this Tasman guy but he won't E-mail me back. I bought 2.5 gallons of the biodiesel and tried it in my PAW .60 diesel engine yesterday without much success. I did get it to kick the prop off once so I know combustion is possible, I want to try it on a warmer day because yesterday it was really cold here. Has anyone tried it or know someone who has? Thanks, Dave